import axios from 'axios'
import { getToken } from '@/utils/auth'
import { Loading } from 'element-ui'

/**
 * Created by PanJiaChen on 16/11/18.
 */

/**
 * Parse the time to string
 * @param {(Object|string|number)} time
 * @param {string} cFormat
 * @returns {string | null}
 */
export function parseTime(time, cFormat) {
  if (arguments.length === 0 || !time) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (typeof time === 'string') {
      if (/^[0-9]+$/.test(time)) {
        // support "1548221490638"
        time = parseInt(time)
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(new RegExp(/-/gm), '/')
      }
    }

    if (typeof time === 'number' && time.toString().length === 10) {
      time = time * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') {
      return ['日', '一', '二', '三', '四', '五', '六'][value]
    }
    return value.toString().padStart(2, '0')
  })
  return time_str
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
  if (('' + time).length === 10) {
    time = parseInt(time) * 1000
  } else {
    time = +time
  }
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分'
  }
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function getQueryObject(url) {
  url = url == null ? window.location.href : url
  const search = url.substring(url.lastIndexOf('?') + 1)
  const obj = {}
  const reg = /([^?&=]+)=([^?&=]*)/g
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1)
    let val = decodeURIComponent($2)
    val = String(val)
    obj[name] = val
    return rs
  })
  return obj
}

/**
 * @param {string} input value
 * @returns {number} output value
 */
export function byteLength(str) {
  // returns the byte length of an utf8 string
  let s = str.length
  for (var i = str.length - 1; i >= 0; i--) {
    const code = str.charCodeAt(i)
    if (code > 0x7f && code <= 0x7ff) s++
    else if (code > 0x7ff && code <= 0xffff) s += 2
    if (code >= 0xdc00 && code <= 0xdfff) i--
  }
  return s
}

/**
 * @param {Array} actual
 * @returns {Array}
 */
export function cleanArray(actual) {
  const newArray = []
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i])
    }
  }
  return newArray
}

/**
 * @param {Object} json
 * @returns {Array}
 */
export function param(json) {
  if (!json) return ''
  return cleanArray(
    Object.keys(json).map((key) => {
      if (json[key] === undefined) return ''
      return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
    })
  ).join('&')
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function param2Obj(url) {
  const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ')
  if (!search) {
    return {}
  }
  const obj = {}
  const searchArr = search.split('&')
  searchArr.forEach((v) => {
    const index = v.indexOf('=')
    if (index !== -1) {
      const name = v.substring(0, index)
      const val = v.substring(index + 1, v.length)
      obj[name] = val
    }
  })
  return obj
}

/**
 * @param {string} val
 * @returns {string}
 */
export function html2Text(val) {
  const div = document.createElement('div')
  div.innerHTML = val
  return div.textContent || div.innerText
}

/**
 * Merges two objects, giving the last one precedence
 * @param {Object} target
 * @param {(Object|Array)} source
 * @returns {Object}
 */
export function objectMerge(target, source) {
  if (typeof target !== 'object') {
    target = {}
  }
  if (Array.isArray(source)) {
    return source.slice()
  }
  Object.keys(source).forEach((property) => {
    const sourceProperty = source[property]
    if (typeof sourceProperty === 'object') {
      target[property] = objectMerge(target[property], sourceProperty)
    } else {
      target[property] = sourceProperty
    }
  })
  return target
}

/**
 * @param {HTMLElement} element
 * @param {string} className
 */
export function toggleClass(element, className) {
  if (!element || !className) {
    return
  }
  let classString = element.className
  const nameIndex = classString.indexOf(className)
  if (nameIndex === -1) {
    classString += '' + className
  } else {
    classString = classString.substr(0, nameIndex) + classString.substr(nameIndex + className.length)
  }
  element.className = classString
}

/**
 * @param {string} type
 * @returns {Date}
 */
export function getTime(type) {
  if (type === 'start') {
    return new Date().getTime() - 3600 * 1000 * 24 * 90
  } else {
    return new Date(new Date().toDateString())
  }
}

/**
 * @param {Function} func
 * @param {number} wait
 * @param {boolean} immediate
 * @return {*}
 */
export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result

  const later = function () {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last)
    } else {
      timeout = null
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args)
        if (!timeout) context = args = null
      }
    }
  }

  return function (...args) {
    context = this
    timestamp = +new Date()
    const callNow = immediate && !timeout
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait)
    if (callNow) {
      result = func.apply(context, args)
      context = args = null
    }

    return result
  }
}

/**
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 * @param {Object} source
 * @returns {Object}
 */
export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'deepClone')
  }
  const targetObj = source.constructor === Array ? [] : {}
  Object.keys(source).forEach((keys) => {
    if (source[keys] && typeof source[keys] === 'object') {
      targetObj[keys] = deepClone(source[keys])
    } else {
      targetObj[keys] = source[keys]
    }
  })
  return targetObj
}

/**
 * @param {Array} arr
 * @returns {Array}
 */
export function uniqueArr(arr) {
  return Array.from(new Set(arr))
}

/**
 * @returns {string}
 */
export function createUniqueString() {
  const timestamp = +new Date() + ''
  const randomNum = parseInt((1 + Math.random()) * 65536) + ''
  return (+(randomNum + timestamp)).toString(32)
}

/**
 * Check if an element has a class
 * @param {HTMLElement} elm
 * @param {string} cls
 * @returns {boolean}
 */
export function hasClass(ele, cls) {
  return !!ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'))
}

/**
 * Add class to element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function addClass(ele, cls) {
  if (!hasClass(ele, cls)) ele.className += ' ' + cls
}

/**
 * Remove class from element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function removeClass(ele, cls) {
  if (hasClass(ele, cls)) {
    const reg = new RegExp('(\\s|^)' + cls + '(\\s|$)')
    ele.className = ele.className.replace(reg, ' ')
  }
}

export function getFileBaseUrl() {
  return public_config.file_api
}
// 下载文件
export function handleDownLoad(url) {
  // axios({
  //   method: 'post',
  //   url: `${public_config.base_api}${url}`,
  //   // headers: {
  //   //   'Authorization': getToken()
  //   // },
  //   responseType: 'blob',
  //   params,
  //   timeout: 60 * 1000
  // }).then(res => {
  //   console.log('resSSS', res)
  //   const name = window.decodeURI(res.headers['content-disposition']).replace('attachment;filename=', '')
  //   const blobUrl = window.URL.createObjectURL(res.data)
  //   var a = document.createElement('a') // 创建a标签
  //   a.href = blobUrl // 设置下载地址
  //   a.download = name // 设置下载文件名称格式
  //   a.click() // 给指定的元素，执行事件click事件
  //   // resolve(res)
  // }).catch(err => {
  //   console.error(err)
  //   // reject(err)
  // })
  // const blobUrl = window.URL.createObjectURL(url)
  var a = document.createElement('a')
  a.style.display = 'none'
  a.href = url
  a.click()
}

// 下载文件带token方法
export function handleDownLoadWidthToken(url, name = null) {
  const loadingInstance = Loading.service({
    fullscreen: true,
    background: 'rgba(255,255,255,0.6)',
    text: '加载中'
  })
  axios({
    method: 'get',
    url: `${public_config.base_api}${url}`,
    headers: {
      Authorization: 'Bearer ' + getToken(),
      'Accept-Language': 'zh-Hans,zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6'
    },
    responseType: 'blob',
    // params,
    timeout: 60 * 1000
  })
    .then((res) => {
      // console.log('resSSS', res)
      // const name = window.decodeURI(res.headers['Content-Disposition']).replace('attachment;filename=', '')
      const blobUrl = window.URL.createObjectURL(res.data)
      var a = document.createElement('a') // 创建a标签
      a.href = blobUrl // 设置下载地址
      a.download = name // 设置下载文件名称格式
      a.click() // 给指定的元素，执行事件click事件
      // resolve(res)
      setTimeout(() => {
        loadingInstance.close()
      }, 10)
    })
    .catch((err) => {
      console.error(err)
      setTimeout(() => {
        loadingInstance.close()
      }, 10)
      // reject(err)
    })
}

// 对象参数转换get请求参数
export function objArgs(params) {
  let reurl = ''
  const keys = Object.keys(params)
  keys.forEach((key) => {
    reurl += key + '=' + encodeURIComponent(params[key]) + '&'
  })
  return reurl
}

// 根据日期生成数字
export function generateNameByDate(name) {
  const date = new Date()
  const formate = '{y}{m}{d}{h}{i}'
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = formate.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') {
      return ['日', '一', '二', '三', '四', '五', '六'][value]
    }
    return value.toString().padStart(2, '0')
  })
  return name + time_str
}
/**
 * @description 获取请求上下文
 */
// export function getBaseUrl() {
//   // return process.env.VUE_APP_FILE_API
//   return window.$global.VUE_APP_FILE_API
// }

/**
 * @description 关闭当前标签页
 */
export function closeActiveTag(_this, path) {
  _this.$store.dispatch('tagsView/delView', _this.$route).then(({ visitedViews }) => {
    if (_this.$route.name === 'Dashboard') {
      // to reload home page
      _this.$router.replace({ path: '/redirect' + _this.$route.fullPath })
    } else {
      if (path) {
        _this.$router.push(path)
      } else {
        _this.$router.push('/')
      }
    }
    // }
  })
}

// 刷新当前
export function refreshView(_this) {
  // In order to make the cached page re-rendered
  _this.$store.dispatch('tagsView/delAllCachedViews', _this.$route)

  const { fullPath } = _this.$route

  _this.$nextTick(() => {
    _this.$router.replace({
      path: '/redirect' + fullPath
    })
  })
}

// 导出功能
export function download(data, filename) {
  filename = generateNameByDate(filename)
  const blob = new Blob([data], { type: 'application/vnd.ms-excel' })
  if ('download' in document.createElement('a')) {
    const elink = document.createElement('a')
    elink.download = filename
    elink.style.display = 'none'
    elink.href = URL.createObjectURL(blob)
    document.body.appendChild(elink)
    elink.click()
    URL.revokeObjectURL(elink.href)
    document.body.removeChild(elink)
  } else {
    navigator.msSaveBlob(blob, filename)
  }
}

export function downloadNoDate(data, filename) {
  // filename = generateNameByDate(filename)
  const blob = new Blob([data], { type: 'application/vnd.ms-excel' })
  if ('download' in document.createElement('a')) {
    const elink = document.createElement('a')
    elink.download = filename
    elink.style.display = 'none'
    elink.href = URL.createObjectURL(blob)
    document.body.appendChild(elink)
    elink.click()
    URL.revokeObjectURL(elink.href)
    document.body.removeChild(elink)
  } else {
    navigator.msSaveBlob(blob, filename)
  }
}
